Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/35141
Título: Quantitative trait loci associated with trichomes in the Solanum galapagense accession LA1401
Palavras-chave: Single nucleotide polymorphism
Indel markers
Composite interval mapping
Ontogenetic
Data do documento: Ago-2018
Editor: Springer
Citação: ANDRADE, M. C. et al. Quantitative trait loci associated with trichomes in the Solanum galapagense accession LA1401. Genetic resources and crop evolution, [S.l.], v. 65, n. 6, p. 1671-1685, Aug. 2018. DOI: 10.1007/s10722-018-0644-3.
Resumo: Pest resistance in Solanum galapagense has been associated with the presence of type IV glandular trichomes and allelochemicals. Knowledge of the genetic factors involved in determining the presence and type of trichomes may assist in the process of gene introgression for development of pest resistant tomato cultivars. In this study, we sought to identify QTLs associated with the presence of type IV trichomes in an F2 population derived from the interspecific cross of Solanum lycopersicum TOM-684 × S. galapagense accession LA1401. Two QTLs contributing to type IV trichome occurrence and density were detected, one major QTL (gal.IV-2), responsible for 35.22% of phenotypic variation, was located on chromosome 2. The other QTL (gal.IV-3) was located on chromosome 3, and explained 23.35% of the phenotypic variation in the F2 population. These QTLs were responsible for 26.44 and 3.37% of the variation observed in a progeny derived from a backcross to TOM-684. The same QTLs were also associated with type II + III non-glandular trichomes, whose densities were negatively correlated to those of type IV trichomes, suggesting that the loci found may have pleiotropic effects for high type IV/low type II + III trichome densities. Our results indicate that the inheritance for type IV trichomes can be explained by a few genetic factors affecting the presence of a gland and the density of trichomes. These results further suggest a revision to trichome classification used for tomato may be appropriate.
URI: https://link.springer.com/article/10.1007/s10722-018-0644-3
http://repositorio.ufla.br/jspui/handle/1/35141
Aparece nas coleções:DAG - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.